| abstract |
It has been found that the unchlorinated pentafluorobutane blowing agents can be used alone or in combination with water in flexible, integral liner foams. For example, foams prepared using 1,1,13,3-pentafluorobutane (HFC 365mfc) alone or in combination with water or other non-chlorinated hydrocarbons such as heptafluoropropane show improved physical characteristics, such as resistance to abrasion and rupture, in bending , compared to conventional chlorinated fluorocarbon blown foam. |